BassLink II

Powered Automotive Subwoofer

SERVICE MANUAL

Infinity Systems, Inc.

250 Crossways Park Dr. Woodbury, New York 11797 Rev0 8/2005

- CONTENTS -

SPECIFICATIONS ………………………………….……..1 PACKAGING…..………………………………….………..2 CONNECTIONS/APPLICATIONS………………………..3 CONTROLS AND FUNCTIONS.……...……..…...…...…6 BASIC TROUBLESHOOTING..…….…….………………8 DISASSEMBLY PROCEDURE.……...….…..…...…...…9 EXPLODED VIEW…………………………………..……10 AMPLIFIER BLOCK DIAGRAM…………………………11 ELECTRICAL PARTS LIST ……………………………. 12 P.C.B. DRAWINGS….…………………………………….18 IC/TRANSISTOR PINOUTS…………………………….. 30 SCHEMATICS.................................................................31

Basslink II Specifications

Output Power (14.4V supply) 250W RMS 1% THD Type of Amplifier AB Frequency response: 20Hz – 120Hz Maximum input signal: 4.0V Maximum sensitivity: 50mV to 4V Line-level input

1V to 16V High-level input Input Impedance 20K Ω Idle Current 100dB (A-weighted ref to full power) Crossover Type Fixed LP @ 12dB per octave Crossover Range Variable 50 – 120 Hz Bass EQ 40Hz (-6dB to +3dB) Phase Control 0 and 180° Min Current Draw (Idle)

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®

Make Power, Ground and Remote turn-on connections as shown in Figure 5. Observe the following installation tips:

• Use #8 AWG wire for the +BATT (+12Vdc) and GND (ground) connections. If needed, useat least a #20 AWG wire for the REM (remote)connection.

• If you pass the power or remote wire through the vehicle’s firewall or other metalobstruction, it must be insulated with a rubbergrommet. If a factory-installed grommet isunavailable, be sure to install a rubber grommet to protect the wires.

• Connect a short GND wire from BassLink II tothe nearest bare metal surface. For a good connection, sand away paint from the metal surface and use a screw with a (star) lock washer.

Figure 5. Power connections for BassLink II.

• Install a fuse holder with a 25A fuse within 18"of the battery + terminal (see Figure 5).

• The REM connection requires +5 to +12 Vdc for BassLink II to turn on remotely. Most headunits with preamp outputs provide this remotevoltage signal. For speaker-level applications, a remote connection is not required, sinceBassLink II’s Auto Turn On feature will sensevoltage on the speaker wires to automaticallyturn on BassLink II.

IMPORTANT: To enable BassLink II’s Auto Turn On feature, set AUTO TURN ON to theAUTO position (see Figure 15 on page 6).

POWER CONNECTIONS

BassLink II is equipped with four line-level (RCA)inputs and four speaker-level inputs. Any combina-tion of line-level and speaker-level inputs may beused to provide nonfading bass when connected toa head unit with four outputs.

Figure 6. BassLink II audio connections for a headunit with two line-level or subwoofer (RCA) outputs.

To help you plan your installation, we haveincluded three system applications in Figures 6through 8. For more system ideas, see yourauthorized Infinity car audio dealer.

Note: The applications show the REMOTE LEVELcontrol, which installs under the dashboard foreasy in-car bass level adjustments (see page 7).

APPLICATIONS

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Figure 7. BassLink II audio connections for a headunit equipped with four line-level (RCA) outputs.

APPLICATIONS (CONTINUED)

Figure 8. BassLink II audio connections for a headunit equipped with four speaker-level outputs.

LF Speaker

+–

RF Speaker

LR Speaker RR Speaker

+–

+–+– Source Unit

BassLink II(right side)

+–RCA Stereo Cables(not supplied)

BassLink II(right side)

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DESCRIPTIONThe BassLink 4sc is a plug-and-play amplifierdesigned to make upgrading your system easy.The BassLink 4sc is designed to slide into anavailable slot in the BassLink II. Unlike an additional outboard amplifier, the BassLink 4scdoesn’t require any additional space. TheBassLink 4sc also includes a Phantom Centereffect, which creates the illusion of a centerchannel even if no center speaker is installed.

INSTALLATION1. Remove the wiring cover from BassLink II. 2. Remove the eight screws that hold the

AMPLIFIER DOCK cover panel in place (Figure 9). Save the screws.

3. Remove the screw that attaches the twowiring harnesses and connectors to the panel.

4. Connect the wiring harness connectors to theappropriate connectors on the BassLink 4sc’scircuit board. See Figure 10.

5. Insert the amplifier and install the eightscrews that were removed in Step 2. SeeFigure 10.

6. Install 40A fuse at the battery.

Note: All four inputs on BassLink II must be usedin order for the BassLink 4sc amplifier to functionproperly.

Figure 9.

Figure 10.

BASSLINK 4SC INSTALLATION

CONNECTIONSConnect the front and rear speakers as shown inFigure 11.

Figure 11.

SETTINGSThe BassLink 4sc has input level control for thefront and rear speakers and PHANTOM CENTERcontrols.

For proper setup, please refer to the full BassLink 4sc owner’s manual.

Figure 12.

APPLICATIONFigure 13. Typical installation using all four speaker-level inputs from the source unit.

Left Front Right

Left Rear Right

+

– –

– –

+

+ +

Left Front Right

Left Rear Right

+– –

– –

+

+ +

BassLink II(right side)

LF

+ –

RF

–+

LR

+–

RR

– +

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BassLink II provides several controls and indica-tors that simplify sonic integration with virtuallyany vehicle’s unique acoustic properties. They arelocated on the front and side panels, as shown inFigures 14 and 15.

Figure 14. BassLink II controls on the front panel.

POWER LED:This indicator will glow blue whenBassLink II is operational.

GAIN Control: Use this control to adjust the rela-tive volume (loudness) of BassLink II with respectto the other speakers in the vehicle.

CROSSOVER: Use this control to adjust theamount of high-frequency information present inBassLink II’s output. A lower value means more ofthe high frequencies are filtered out.

BASS BOOST: Use this control to correct any perceived peak or dip in the bass response (typically around 40Hz in most vehicles). Set thecontrol to any value between –6dB and +3dB,according to what sounds best.

Figure 15. BassLink II controls on right-side panel.

PHASE Control: Use this switch to reverse thephase of BassLink II’s output with respect to its input. Choose the position (0° or 180°) thatsounds the best.

Note: Depending on BassLink II’s orientation andlocation in a vehicle, reversing the phase may, or may not, increase or decrease the amount of upper bass being reproduced.

AUTO TURN ON: For speaker-level connections,use this switch to activate (or deactivate) BassLinkII’s automatic turn-on circuit. For most speaker-levelapplications, slide the switch to AUTO. However, ifyour system produces false turn-on signals or usesa remote (REM) connection, slide the switch to OFF.

REMOTE LEVEL Control: Use this RJ11 jack to connect the REMOTE LEVEL control (see page 7).

SERVO LED:This indicator glows blue when thesubwoofer is at maximum excursion and theamplifier is modifying the output to maintainmaximum performance. Be sure to monitor thisindicator during BassLink II setup (see TuningBassLink II). When properly tuned, the SERVO LEDshould light momentarily during high-level basstransients. Avoid adjustments that cause the LEDto remain lit for extended periods.

CONTROLS AND FUNCTIONS

1. Unplug the RJ11 cable that connects theREMOTE LEVEL control to BassLink II.

2. Make sure the head unit is off and its volumecontrol is set to minimum.

3. On BassLink II’s front panel, initially set all controls to their midpoint positions, asshown in Figure 14. On BassLink II’s sidepanel, initially set PHASE to 0°, as shown in Figure 15.

4. Turn on the head unit and play a favoritemusic track that has substantial bass. Set thehead unit’s volume control to 75 percent ofthe total output (approximately 3 o’clock onrotary controls).

5. Adjust the GAIN control clockwise until theSERVO LED (on BassLink II’s side panel)begins to flash with each bass note but doesn’t stay lit continuously.

6. Listen to your system, making a mental note of the amount of upper bass being reproduced.

7. Switch the PHASE control to 180° and listenagain for upper bass content. There may bemore upper bass, less upper bass, or nochange at all. The position that provides themost upper bass is correct, but choose eithersetting according to your taste.

8. Adjust the CROSSOVER control clockwise or counterclockwise until you hear only low-frequency information. For example, youshould NOT hear any vocals coming fromBassLink II when seated in the normal listen-ing position.

9. Adjust the BASS BOOST control clockwise orcounterclockwise to suit your taste.

10. Recheck the SERVO LED to make sure it’s flashing in time with the bass but is not lit continuously. If it is lit continuously, adjust the GAIN control counterclockwise until theSERVO LED only flashes in time with the bass.

11. Reconnect the RJ11 cable between theREMOTE LEVEL control and BassLink II. Youmay then use the REMOTE LEVEL control toadjust the level of the bass to suit your tasteand/or different program material.

Note: In most cases, the above steps will providesatisfactory tuning. However, the actual processmay require several readjustments of each control,since the settings will interact with each other. If necessary, consult your authorized Infinity car audio dealer for help in tuning your system.

TUNING BASSLINK II

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The REMOTE LEVEL control is used to adjust theoutput level of the subwoofer. This level controlallows you to reduce the subwoofer output formusic with heavy bass content and increase thelevel for music with less bass content.

PHANTOM CENTER Switch:The REMOTE LEVELcontrol has a three-position switch that is usedwhen the BassLink 4sc amplifier is installed.Please refer to the BassLink 4sc owner’s manual for the specific operation of this switch.

INSTALLATION OPERATIONCONNECTING THE REMOTE LEVELCONTROL TO BASSLINK II

The REMOTE LEVEL control may be mountedunder the dash or may be dismantled and mounted in the dash for a factory appearance.

UNDER-DASH MOUNTING Select a mounting location that allows easyaccess to the control while driving. Using theREMOTE LEVEL control as a template, mark anddrill holes in the mounting surface. Attach theREMOTE LEVEL control using the mountingscrews provided (Figure 16).

Figure 16. Under-dash mounting of the REMOTELEVEL control.

Route the cable behind the dash or other interiorpanels and under the carpet. Do not route the cable outside the vehicle. Connect the RJ11 cablebetween the RJ11 receptacle on the BassLink II and the receptacle on the REMOTE LEVEL control(Figure 17).

Figure 17. REMOTE LEVEL control electrical connection.

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BassLink II (4sc, if installed)• PROBLEM:

POWER LED not lit.

CAUSES and SOLUTIONS:1. Fuse is blown and needs replacement.2. Head unit not functioning properly. Check

remote voltage, and power, ground orremote connections.

• PROBLEM: POWER LED is lit but there is no bass.

CAUSES and SOLUTIONS:1. Inputs are not connected. Check connections.2. Head-unit fader control is not set properly.

Adjust head-unit fader control to feed audiosignals to BassLink II.

• PROBLEM: BassLink II sounds muddy or distorted.

CAUSES and SOLUTIONS:1. Gain is set too high and SERVO LED is lit

constantly. Readjust GAIN control (seeTuning BassLink II on page 6).

2. Bass is set too high. Readjust BASS BOOSTcontrol (see Tuning BassLink II on page 6).

3. Head-unit output is distorted or blown. Seeyour authorized Infinity car audio dealer.

• PROBLEM: No output from BassLink II when head-unit fader control set to front or rear (in a 4-channel connection).

CAUSE and SOLUTION:Input connections are improperly wired. Verifyall connections (see Applications starting onpage 3).

• PROBLEM: BassLink II turns on before head unit is com-pletely on and produces a “thump” sound.

CAUSE and SOLUTION:For speaker-level connections, head unit is producing a false turn-on signal. On BassLinkII’s side panel, slide AUTO TURN ON to OFF.

• PROBLEM: BassLink II’s POWER LED remains on after headunit is turned off.

CAUSE and SOLUTION:For speaker-level connections, this is normaloperation when AUTO TURN ON is set to ON.BassLink II will remain on another 5 to 10 min-utes after sensing that audio signals are notpresent before shutting down.

• PROBLEM: BassLink II produces a loud humming noisewith the system OFF when using speaker-levelinputs.

CAUSE and SOLUTIONS:This problem is caused by a feedback loopbetween your speakers and the high-level inputsof BassLink II.

Choose one of the following solutions:

1. Connect a wire from the REMOTE terminal onBassLink II to the remote turn-on of your headunit or to the vehicle’s accessory circuit. On thecontrol panel, slide the AUTO TURN ON switchto the OFF position.

2. Connect the supplied capacitors between each of the speaker outputs of the head unitand the speaker’s positive lead, as shown in Figure 18. Connect each positive lead ofBassLink II’s high-level inputs to the head-unitside of the capacitors. Use one capacitor perspeaker input channel.

Figure 18. Connecting supplied capacitors.

TROUBLESHOOTING

Capacitor

+ Speaker wire from head unit

To + speaker-levelinput on BassLink II

To + speaker lead

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BASSLINK II DISASSEMBLY

1) Remove “Amplifier Dock” cover; (8) Phillips screws.

2) Remove (10) Phillips screws holding main heatsink/amplifier to enclosure,

tapping the heatsink with a rubber mallet may be necessary to loosen it. Pull

amplifier from enclosure

3) Remove single 12 pin Molex connector M300 and both pairs of FASTON

terminals from the amplifier PCB; do not mix up the two pairs of red/black wires

(speaker and A/B). Label if necessary.

4) With the screw cavities facing upwards on the enclosure, remove the (12) Phillips

screws holding the enclosure together.

5) Using the opening of the “Amplifier Dock” as leverage, separate the enclosure

halves; to completely separate the wiring, remove the 8 pin Molex connector

M200 from the Jack/Limiter PCB.

6) If the Gain PCB (Gain/Xover/Base pots) needs to be accessed, there is an

additional screw holding the plastic cover on, besides the two exposed ones, that

must be removed and is visible after removing the 10" passive radiator (8 Phillips

screws)

7) The Jack PCB is not serviceable, as it is attached to the enclosure with adhesive.

8) Reassembly: follow in reverse order, and be sure to not mix the red/black wire

pair (speaker and A/B) on the MAIN PCB when you connect them to the

FASTON terminals.

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Powered Subwoofer Basslink II

EXPLODED VIEW Ref # Description Part Number Qty 1 Infinity Logo 316-000-00130-1BA 2 2 Grille 329-100-05125-0VA 2 3 Screw M6*25 Black 351-AM06025A946 8 4 Screw T4*25 Black 352-AM04025D964 16 5 Front baffle 372-000-05027 1 6 Woofer F25X12PR-03DW-P 1 7 Gasket 333-EVA-05142-0BA 1 8 PVC label 315-PC-05035-0TAE 1 9 Side Cover 305-PC-05007-0BA 1

10 Plastic Control Cover 305-PC-05008-0BAE 1 11 Screw M3*12 Black 351-AM03012A090 8 12 Grommet 335-NYL-05012-0WA 1 13 Rubber Cover Retainers 338-RUB-05027-0BA 4 14 Metal Insert 339-FE-05015 4 15 Passive Woofer PR-255008-P 1 16 Back Baffle 372-000-05028 1 17 Rubber Cork 338-RUB-05029-0BA 8 18 Screw M4*15 Black 351-AM04015A947 10 19 Heat Sink 011-7525-00580 1 20 Screw M3*12 Black 352-CM03012D076 1 21 Gasket 333-EVA-05139-0BA 12 22 Metal Insert 339-FE-05014 5 23 Screw M3*12 Black 352-AM03012D831 3 24 Cover 398-PC-05128 1 25 Light Pipe 398-PC-05127 1 26 Screw M4*12 Black 352-HM04012D319 9 27 Control PCB 1 28 Knob Gain/Xover/Base 015-7500-00130 3

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2.6 ohm DCR

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BASSLINK II Electrical Parts List

Part Numbers Description Qty Reference Designators

POWER SUPPLY/MAIN PCB

Resistors

110-14102j26 Resistor 1K 1/4W ±5% CF 26mm 1 R561110-16102j26 Resistor 1K 1/6W ±5% CF 26mm 1 R560110-16103j26 Resistor 10K 1/6W ±5% CF 26mm 1 R540110-16154j26 Resistor 150K 1/6W ±5% CF 26mm 1 R80A110-16182j26 Resistor 1.8K 1/6W ±5% CF 26mm 1 R74A110-16203j26 Resistor 20K 1/6W ±5% CF 26mm 2 R563,564110-16220j26 Resistor 22Ω1/6W ±5% CF 26mm 4 R526,527,528,529110-16221j26 Resistor 220Ω1/6W ±5% CF 26mm 1 R76A110-16473j26 Resistor 47K 1/6W ±5% CF 26mm 1 R77A110-16682j26 Resistor 6.8K 1/6W ±5% CF 26mm 1 R77C116-1410r0j26x metal film Resistor 10Ω 1/4W 26mm 1 R615116-142201j26x metal film Resistor 2.2K 1/4W ±5% MO 26mm 2 R532,534113-50r12j00 cement Resistor 0.12ohm 5W ±5% 1 R82A113-50r18j00 cement Resistor 0.18Ω 5W ±5% 1 R81A116-101000j20x metal film Resistor 1W 100Ω 5% 1 R539116-303300jk2x metal film Resistor 330Ω 3W 5% 10mm 2 R531,533

Capacitors

135-c158m35-e electrolytic cap 1500uF 35V ±20% 105℃13mm*25mm (RoH 2 C501A,501B135-c337m35 electrolytic cap 330uF 35V ±20% 105℃ 1 C561138-5228m801 large aluminum ec 2200uF 80±20% ψ25*30 2 C521,523129-a334j633 metalized capacitor 0.33uF 63V±5% MSC 1 C562130-2b101k503 disc capacitor 100P 50V ±10% 3 C335,336,337130-2b221mj03 disc capacitor 220P 1000V ±20% 1 C539130-3f104z503 disc capacitor 0.1U 50V +80/-20% 4 C502,533,535,540130-3f222k503 disc capacitor 0.0022uF(2.2NF) 50V ±10% 1 C560132-104ja03 mylar capacitor 0.1UF 100V±5% 3 C526,537,538132-372ja03 mylar capacitor 0.027UF 100V±5% 1 C60A135-3476m50 electrolytic cap 47uF 50V ±20% 4 C531,532,534,536140-ax104ka03 multi-layer capacitor 0.1uF 100V X7R ±10% 2 C104A,C524130-3f104z503 disc capacitor 0.1U 50V +80/-20% 1

Semiconductors

192-161tip31c transistor TIP31C SGS NPN 1 Q531192-162tip32c transistor TIP32C SGS PNP 1 Q532192-16360nf06 transistor STP60NF06 SGS FET 4 Q508,509,510,511197-141n4004 diode IN4004 1 D50197-301604gd diode SF1604G-D 2 D511,512192-027c2235y transistor 2SC2235Y NPN 1 Q16A197-0131n4148 transistor IN4148 26mm 1 D52A199-05001505j zener diode 400mW 15V ROHM 52mm IN5254B 2 Z501,502

Miscellaneous

109-1ttc802j0 thermister TTC-802(JS)NTC 1 TH501120-1000003 inductor 10W AI YT-C3104-005 1CRHW 354708LTB 3 B500,501,502122-14106m130 inductor MIZI R251510 3*ψ1.3 1.0mH 1 L500150-r36231504 transformer RT36-6T:28T 1 T500171-u833h1cc relay 833H-IC-C 12VDC 1 RL50175-1c12v01 coupling 12PIN PITCH=2.5mm 1 M300176-ft205 wire connector pin FASTON M#205 2 SP-,A,176-ft250 wire connector pin FASTON M#250 2 SP+,B,359-FIB-00004 gasket 26*8*1.5T 4193-0s080020 insulator 80*20*0.3t 2

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Part Numbers Description Qty Reference Designators

POWER SUPPLY/MAIN PCB

193-0s4211 insulator (INSULATION SPACER)42*11 1193-201612tr insulator TO-220 16mm*12mm 3 for Q10,10B,11236-AL-05001 AL patten 1317-000-00037 terminal T=0.3 1323-AL-05042-0BA heat sink 218*100*21(H) 1323-AL-05043-1LA heat sink 177*93*73MM 1333-EVA-00216 EVA PACKING(G)15*25*3T 2 TO thermister-2333-EVA-05144-1BAE EVA 199.63*10*3T black (RoHS) 2333-EVA-05145-2BAE EVA98*8.5*3T (RoHS) 2351-AM03005A015 screw M3*0.5P*5L 4 PCB -H/S-4351-AM03016A097 M3*16 screw 4 heat -holder-4351-AM03022A958 screw M3*22 2 Toclass-D-2352-BM04006E975 screw T45*6 8 "L"H/S-H/S-8361-FE-05000 IC bracket 69*12*4*1.5T 1361-FE-05050-0LA IC bracket 64*12*1.5T 1362-CU-05029-0YA PCB interval batten 5.5L*5.5W*6.5H 4 PCB-H/S-4

JACK/LIMITER PCBs

Resistors

110-16102j26 Resistor 1K 1/6W±5% CF 26mm 1 R52

110-16103j26 Resistor 10K 1/6W±5% CF 26mm 18 R47,48,49,50,285,294,302,307R309,330,5,6,7,8,23,24,25,26110-16104j26 Resistor 100K 1/6W±5% CF 26mm 10 R301,27,28,29,30,31,32,33,34,36110-16122j26 Resistor 1.2K 1/6W±5% CF 26mm 1 R295110-16123j26 Resistor 12K 1/6W±5% CF 26mm 1 R234110-16151j26 Resistor 150Ω 1/6W±5% CF 26mm 2 R310,311110-16153j26 Resistor 15K 1/6W±5% CF 26mm 2 R304,328110-16154j26 Resistor 150K 1/6W±5% CF 26mm 1 R329110-16183j26 Resistor 18K 1/6W±5% CF 26mm 1 R274110-16222j26 Resistor 2.2K 1/6W±5% CF 26mm 5 R37,38,39,40,228

110-16223j26 Resistor 22K 1/6W±5% CF 26mm 18 R17,18,41,42,43,44,45,46,254,287R9,10,11,12,13,14,15,16110-16273j26 Resistor 27K 1/6W±5% CF 26mm 2 R257,273110-16303j26 Resistor 30K 1/6W±5% CF 26mm 1 R305110-16333j26 Resistor 33K 1/6W±5% CF 26mm 1 R277110-16472j26 Resistor 4.7K 1/6W±5% CF 26mm 10 R275,276,1,2,3,4,19,20,21,22110-16473j26 Resistor 47K 1/6W±5% CF 26mm 2 R14A,290110-16474j26 Resistor 470K 1/6W±5% CF 26mm 1 R278110-16511j26 Resistor 510Ω 1/6W±5% CF 26mm 4 R256,586,303,306110-16512j26 Resistor 5.1K 1/6W±5% CF 26mm 2 R312,51110-16562j26 Resistor 5.6K 1/6W±5% CF 26mm 1 R238110-16563j26 Resistor 56K 1/6W±5% CF 26mm 1 R237110-16755j26 Resistor 7.5M 1/6W±5% CF 26mm 1 R293116-167871f26 metal film Resistor 7.87K 1/6W MF 26mm 1 R279

Capacitors

135-0477m35 electrolytic cap 470uF 35V ±20% 1 C503137-3106m35-e mini aluminum ec 10uF 35V 85℃ ± 20% ψ5*5 (RoHS) 2 C50,C53

130-2b101k503 disc capacitor 100P 50V ±10% 18 C4,11,12,17,18,20,23,24,26,29,30C32,214,253,330,331,333,334130-2b470k503 disc capacitor 47P 50V ±10% 4 C3,19,25,31

130-3f104z503 disc capacitor 0.1U 50V +80/-20% 11 C5,6,39,40,41,43,268C269,301,303,501132-103j503 mylar capacitor 0.01uF 50V ±5% 5 C252,270,271,500,504132-153j503 mylar capacitor 0.015U 50V ±5% 1 C33135-3105m50 electrolytic cap 1U 50V ±20% 1 C311

135-3106m50 electrolytic cap 1uF 50V ±20% 11 C7,8,34,272,273,300C302,13,14,15,16

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Part Numbers Description Qty Reference Designators

JACK/LIMITER PCBs

135-3226m50 electrolytic cap 22U 50V ±20% 9 C1,2,9,10,21,22,27,28,264135-3475m50 electrolytic cap 4.7U 50V ±20% 1 C312135-3476m50 electrolytic cap 47uF 50V ±20% 1 C251137-3106m35-e mini aluminum ec 10uF 35V 85℃ ± 20% ψ5*5 (RoHS) 2 C52,C51

Semiconductors

190-06m13700n I.C. NJM13700N JRC Dual Op Transconductance Amplifier 1 U301190-06m45581d I.C.NJRC NJM4558LD Dual Op-amp 3 U1,2,3190-16t1074cn I.C TL074CN ST Quad Op-amp 1 U203195-10204hd L.E.D red 3mm FOR STANDBY 1 LD200197-306a20 diode 6A 200V 6A20 1 D502192-027c1815gr transistor 2SC1815GR NPN 3 Q200,201,301192-028a1015gr transistor 2SA1015GR PNP 1 Q202197-031n4148 diode IN4148 26mm 6 D201,202,1,2,3,4

Miscellaneous

154-k025a800 fuse 25A 32V ATC UL/CSA 1 F500155-9f30240 fuse holder F30240100P 1 for F500162-10402003 wire ass'y 400mm 12AWG BLACK#250 W/ TUBE SLEEVE 1 BAT+F162-10430001 wire ass'y 430mm 12AWG BLACK#205 W/ TUBE SLEEVE 1 A162-5020c003 wire ass'y 200mm#2468 26AWG 9PIN 1 WB1162-5045c001 UL wire ass'y 450mm #2468 26AWG 12PIN 1 W300162-a030d001 wire ass'y 300mm 16AWG 1 BAT+,BAT-174-0b402p RCA JACK B402P 1 JK1174-535913sg-1 DC JACK BASSLINK II 1 JK500174-9mjd0604 jack M/JACK D/S 6P4C BLACK 6U 1 JK4175-9c08v01 coupling 8PIN PITCH=2.5mm 1 W200175-9f10v02 coupling 10PIN black PITCH=2.54mm PHFY-10SB-S032 2 W301,302175-9f10v22a coupling PIN HEADER 10PIN black P=2.54mm 2 M301,302175-9h04v01 coupling 4PIN PITCH=4.2mm 2 JK2,3180-s570050 switch SS70050-0202-10T-NN 2 SW1,2359-FIB-00005 gasket ODψ8*3.5T 2362-NYL-05030-0WA interval batten LDE 12H LEDS-12 1333-EVA-05156-0BA EVA gasket 42.5*3*1mm 2333-EVA-05157-0BA EVA gasket 174*3*1mm 2333-SPG-00850 foam 50*5*200mm 1333-SPG-00860 foam 450*50*5T 1333-SPG-00875 foam 250*50*5T 1333-SPG-00876 foam 400*50*5T 1362-CU-05034-0YA coppet postψ5.5*ψ5.5*12.4H 6 PCB TO PCB-6362-NYL-05006-0WA interval batten 10H(MAE-10T;HAKUTO-10)white 6 PCB-PCB-6

PWM/CONTROL PCB

Resistors

110-16100j26 Resistor 10ΩK 1/6W±5% CF 26mm 3 R521,523,613110-16102j26 Resistor 1K 1/6W±5% CF 26mm 4 R424,502,519,629

110-16103j26 Resistor 10K 1/6W±5% CF 26mm 12 R507,508,511,611,612,616,621R622,623,625,626,627110-16104j26 Resistor 100K 1/6W±5% CF 26mm 4 R517,614,618,624110-16105j26 Resistor 1M 1/6W±5% CF 26mm 2 R420,422110-16106j26 Resistor 10M 1/6W±5% CF 26mm 1 R421110-16123j26 Resistor 12K 1/6W±5% CF 26mm 1 R513110-16152j26 Resistor 1.5K 1/6W±5% CF 26mm 1 R550110-16221j26 Resistor 220ΩK 1/6W±5% CF 26mm 1 R501110-16222j26 Resistor 2.2K 1/6W±5% CF 26mm 1 R515110-16223j26 Resistor 22K 1/6W±5% CF 26mm 1 R628110-16393j26 Resistor 39K 1/6W±5% CF 26mm 1 R631

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Part Numbers Description Qty Reference Designators

PWM/CONTROL PCB

110-16432j26 Resistor 4.3K 1/6W±5% CF 26mm 1 R505110-16433j26 Resistor 43K 1/6W±5% CF 26mm 1 R503110-16471j26 Resistor 470ΩK 1/6W±5% CF 26mm 3 R510,522,524110-16472j26 Resistor 4.7K 1/6W±5% CF 26mm 1 R520110-16512j26 Resistor 5.1K 1/6W±5% CF 26mm 1 R514110-16562j26 Resistor 5.6K 1/6W±5% CF 26mm 2 R518,630110-16681j26 Resistor 680ΩK 1/6W±5% CF 26mm 1 R504110-16682j26 Resistor 6.8K 1/6W±5% CF 26mm 1 R516110-16683j26 Resistor 68K 1/6W±5% CF 26mm 1 R538110-16751j26 Resistor 750ΩK 1/6W±5% CF 26mm 1 R509116-161001f26 metal film Resistor 1K 1/6W±1% MF26mm 2 R541,542116-161132f26 metal film Resistor 11.3K 1/6W±1%MF26mm 1 R512116-1410r0j5vx metal film Resistor 10Ω 1/4W ±5% 1 R500

Capacitors

129-a105j633 metalized capacitor 1uF 63V ±5% MSC 1 C505130-2b102k503 disc capacitor 1000P 50V±10% 1 C420130-2b272k503 disc capacitor 2700pF 50V±10% 1 C507130-2b472k503 disc cappacitor 4700P 50V ±10% 2 C511,624

130-3f104z503 disc capacitor 0.1U 50V +80/-20% 10 C503,506,509,510,512,542C611,621,623,625135-3106m50 electrolytic cap 10uF 50V ±20% 1 C422135-3226m50 electrolytic cap 22U 50V ±20% 1 C508135-3337m10 electrolytic cap 330U 10V ±20% 1 C612135-3337m16 electrolytic cap 330uF 16V ±20% 1 C622135-3476m50 electrolytic cap 47uF 50V ±20% 1 C421137-3227m25 mini aluminum ec 220uF 25V ±20% 1 C504

Semiconductors

192-027c1815gr transistor 2SC1815GR NPN 11 Q404,406,501,503,514,610Q611,612,622,624,626192-028a1015gr transistor 2SA1015GR PNP 6 Q502,504,505,621,623,625192-028a965y transistor 2SA965Y PNP 1 Q500197-031n4148 diode IN4148 26mm 7 D503,540,550,552,611,612,613199-15000625 zener diode 6.2V 1/2W 52mm 1 Z500190-13494cn IC TL494CN PWM 1 U500190-99pc817c IC PC817C(COSMO) Opticoupler 1 U501192-027c1815gr transistor 2SC1815GR NPN 2 Q405,513192-028a1015gr transistor 2SA1015GR PNP 1 Q506

Miscellaneous

175-9f40hr2 coupling 40PIN PITCH=2.54mm HR2*40 0.4 M501,502

GAIN PCB

Resistors

115-h503b109 variable Resistor RD-901F-20-19KW-B50K-00D Gain, Bass 2 VR201,202115-h503b214 variable Resistor RD-902F-20-19KW-B50K-00D Crossover 1 VR203110-16102j26 Resistor 1K 1/6W±5% CF 26mm 3 R219,222,233110-16103j26 Resistor 10K 1/6W±5% CF 26mm 2 R221,229110-16123j26 Resistor 12K 1/6W±5% CF 26mm 1 R227110-16153j26 Resistor 15K 1/6W±5% CF 26mm 1 R218110-16202j26 Resistor 2K 1/6W±5% CF 26mm 1 R200110-16223j26 Resistor 22K 1/6W±5% CF 26mm 2 R240,241110-16243j26 Resistor 24K 1/6W±5% CF 26mm 1 R225110-16392j26 Resistor 3.9K 1/6W±5% CF 26mm 1 R224110-16393j26 Resistor 39K 1/6W±5% CF 26mm 1 R223

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Part Numbers Description Qty Reference Designators

GAIN PCB

110-16473j26 Resistor 47K 1/6W±5% CF 26mm 2 R251,253110-16474j26 Resistor 470K 1/6W±5% CF 26mm 1 R220110-16622j26 Resistor 6.2K 1/6W ±5% CF 26mm 2 R250,252

Capacitors

129-a104j633 metalized capacitor 0.1U 63V±5%MSTCAP 1 C211129-a224j633 metalized capacitor 0.22uF 63V±5%MSC 1 C215129-a274j633 metalized capacitor 0.27uF 63V±5% 4 C260,261,262,263129-a394j633 metalized capacitor 0.39uF 63V±5%MSTCAP 1 C210129-a823j633 metalized capacitor 0.082U 63V±5%MSC 1 C216130-2b101k503 disc capacitor 100P 50V ±10% 4 C242,281,282,283130-3f104z503 disc capacitor 0.1U 50V +80/-20% 6 C229,230,233,234,235,274132-102j503 mylar capacitor 0.001U 50V±5% 1 C280132-103j503 mylar capacitor 0.01uF 50V±5% 1 C217137-3106m50 mini aluminum ec 10uF 50V ±20% 4 C228,230,266,267

Semiconductors

190-06m4558d I.C. OPA 4558D Dual Op-amp 3 U200,204,205195-10204ubd L.E.D 204-10UBD Power 1 LD500

Miscellaneous

361-NYL-05049-0WA LEDψ3*6 1 socket for LD500162-a045d002-e wire ass'y (RoHS) 1 M200398-CU-05128-0BAE control knob airtight cover PC+10%Gf black (RoHS) 1

CLASS D AMP

118-12061001j SMD Resistor 1.00K 1206 5% 1 R2118-12061002j SMD Resistor 10.0K 1206 5% 6 R25,29,30,30B,7,9118-120610r0j SMD Resistor 10.0Ω 1206 5% 4 R20,20B,22,23118-12062002j SMD Resistor 20.0K 1206 5% 1 R26

110-12062201j SMD Resistor 2.20K 1206 5% 19 R6,13,16,31,33,34,35,36,37,38R39,40,41,42,43,44,45,46,32118-12062204j SMD Resistor 2.20M 1206 5% 1 R4118-12062701j SMD Resistor 2.70K 1206 5% 1 R10118-12063000j SMD Resistor 300.0Ω 1206 5% 1 R24118-12063301j SMD Resistor 3.30K 1206 5% 5 R1,14,15,27,28118-12063902j SMD Resistor 39.0K 1206 5% 1 R3118-12064700j SMD Resistor 470Ω 1206 5% 3 R8,11,21118-12064701j SMD Resistor 4.70K 1206 5% 2 R5,12

Capacitors

141-c0101k50 SMD Capacitor 100pF 50V10% 1206 NPO 1 C4141-c0220k50 SMD Capacitor 22pF 50V10% 1206 SMT NPO 1 C5141-c0561k50 SMD Capacitor 560pF 50V10% 1206 NPO 1 C6141-c5104m50 SMD Capacitor 1206 Y5V 0.1uF 50V±20% 8 C2,3,7,8,9,10,11,15141-c7223k50 SMD Capacitor 0.022uF 50V 10%1206 X7R 1 C13141-d7104ka0 SMD Capacitor 0.1uF 100V 10%1210 X7R 4 C12,14,18,19128-e106ma01-s non-polar ec 10uF 10V 20% 2 C16,17132-104kb50 mylar capacitor 0.1U±10% 250V LS-1.mmMD 1 C20132-105kb50 mylar capacitor 1uF 250V ±10% 1 C40

Semiconductors

190-16t1072dts SMD I.C.TL072CDT SGS THOMSON Dual Op-amp 1 IC1192-09124126qs SMD transistor 2SC2412K-T146Q/R ROHM 2 Q1,4192-09139066rs SMD transistor 2SC3906K-T146R ROHM 2 Q2,8

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Part Numbers Description Qty Reference Designators

CLASS D AMP

192-091sc4672 transistor 2SC4672(MPT3)ROHM 1 Q5B192-092130376qs SMD transistor 2SA1037K-T146Q/R ROHM 2 Q7,9192-09215146rs SMD transistor 2SA1514K-T146R ROHM 1 Q3192-1582n5401 transistor FSC 2N5401 AI-PNP 350V 500mA TO-92 1 Q6B197-03r1s4148s SMD diode RLS4148-TEII ROHM 8 D1,2,3,4,5,5B,6,20199-15000563s SMD ZENER 5.6V 5%PHILIPS BZX84-C5V6 2 Z1,Z2199-15001203s SMD ZENER 12V 5% PHILIPS BZX84-C12 4 Z3,4,5,6192-232irf9640 FET IRF9640 IF P-CH T0220 2 Q10,10B192-233f640n FET IRF640N INTERNATIONAL 1 Q11

Miscellaneous

122-13151k0190 CHOKE SA-500-280(PT1601B*151MAA) 1 L1122-14300k4 Ferrite core LD1215*300KU*±10% 1 L2175-9f40hr2 coupling 40PIN PITCH=2.54mm HR2*40

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Binder1.pdfAmplifier block diagram.pdfPCB drawings.pdfSchematics.pdf